FMI estimated the upcycled food waste protein snacks market was valued at USD 1.4 billion in 2025. The food waste protein snacks industry is expected to advance to USD 1.6 billion in 2026 and USD 4.1 billion by 2036. Spent Grain Protein is poised to dominate by protein source with 32.5% share in 2026 and Health & Fitness Consumers is estimated to lead by End Consumer through 2036.